Pulley-frame.



FIGM

PTENTED UG. 14 1906. L. ZAMBONI., PULLEY FRAME.

APPLICATION FILED JULY 1a. 1904.

NOL828,698.

WITNESSES: 6 /f /XM 7 LAWRENCE ZAMBONI, OF PHILADELPHIA, PENNSYLVANIA,ASSIGNOR T THE. AMERICAN PULLEY COMPANY,

OF PHrLADELPHIA, PENNSYL- VANIA, A CORPORATION OF PENNSYLVANIA.

' PuLLEY-FRAME.

Specification of Letters Patent.

Patented Aug'. 14, 11906v Application filed July 18,1904. Serial No.217.090.

To all whom it may concern:

Be it known that I, LAWRENCE ZAMBONI, of Philadelphia, in the State ofPennsylvania, have invented certain new and useful Im- -rovements inPulley-Frames, whereof the ollowing is a specification, reference beinghad to the accompanying drawin s.

My invention relates particularIyto frames for window-sash pulleys; andit is the object 1 o of my invention vto provide a frame of pressedsheet `metal which can be manufactured at less cost than the cast-metalframes heretofore employed.

As hereinafter described, my invention in- 1 5 cludes a frame comprisinga face-plate which is adapted to be set in the window-j amb and to whichis rigidly secured a pressed sheetmetal casing inclosing a pulley andsupporting a shaft upon which the ulley rotates. 2o Said casing may beformed o a single piece of sheet metal drawn by pressing operations soas to comprise a rearwardly-extending perimeter curved in substantiallyconcentric relation with the pulley and forming a dustproof cover forthe same, said perimetric ortion of the 'casin being integral with botof the sides thereo and the ends of the casing being provided withlugsin engagement with rivets by which the casing is secured to theface-plate. Said perimetric portion of the casing comprises a recess ofvlimited area through which the cord extends4 from the pulley, and saidrecess is provided with a rounded marginal flange to avoid abrasion ofthe cord.

My invention comprises the various novel features of construction andarrangement hereinafter more definitely specified.

In the drawings, Figure I is a side eleva- 4o tion of a frameconveniently embodying my invention. Fig. II is a rear elevation of saidframe. Fig. III is a sectional view taken on the line III III inFig. I.

In said figures, 1 is the face-plate, throu h which the pulley 2projects, adjoining tie sash whose cord is to extend over said pulley.Said pulley is mounted to rotate on the shaft 4, which extends throughand is provided with rivet-heads outside of the casin 6, 5o which ispressed from a single piece of's eet metal inclosing said pulley andprovided with a recess 8p, through which the cord depends from thepulley within the windowbox. It may be noted that therearwardlyextending perimeter of said casing 6 is curved insubstantially concentric relation with said pulley 2 and forms adust-proof cover for the up er portion thereof. Said casing is provi edwith lugs 9 and 10 to receive the rivets 12 and 13, which support thecasing in rigid relation to the face-plate 1.

It may be noted that, as indicated in Fi I, the recess 8 in the casingis provided wit the rounded marginal flange 15, so that the sash-cordwill not be abraded if swung into contact therewith by the vibration ofthe sash-weight.

Referring articularly to Fig. I, it may be noted that tfie shaft 4 isdisposed eccentrically in relation to the height of the pulleycasing toafford a larger space above than below the pulley 2, for the reason thatthe cord extends over the pulley and the desired room for the same isthus secured within the minimum amountof metal.

Although Ihave shown the casing secured to the face-plate 1 by rivets 12and 13, it is to be, understood that other means of connecting saidmembers may be employed.

I do not desire to limit myself to the precise details ofconstructionand arrangement herein specified, as various modifications may be madetherein without departing from the essential features of my invention.

I claim- 1. In a pulley-frame, the combination with a pressedsheet-metal face-plate of a pressed sheet-metal casing having arearwardly-extending perimeter curved in substantially concentricrelation with the pulley, saidperimetric portion of the casing beingdrawn integral with both of the sides thereof; means distinct from saidface-plate and casing connecting them in ri id relation; a shaft in saidcasing; and a pu ley mounted to rotate in said casing on said shaft,substantially as set forth.

2. In a pulley-frame, the combination with a pressed sheet-metalface-plate, of a pressed sheet-metal casin formed of a single piecedistinct from sai face-plate, having a rearwardly-extending perimetercurved in substantially concentric relation with the pulley, saidperimetric portion of the casing being drawn integral with both of thesides thereof; flanges integral -with and part of the vlo@ casingextending from said casing at opposite ends thereof in parallel relationwith said face-plate; means local to said anges connecting saidface-plate and casing in rigid relation; a shaft in said casing; and apulley mounted to rotate in said casing-on said shaft, substantially asset forth.

3. In a pulley-frame, the combination with a pressed sheet-metalface-plate, of a pressed sheet-metal casing formed of a single piecedistinct from said face-plate, having a rear- Wardly-extendingperimetercurved in substantially concentric relation With the pulley, saidperimetric portion of the casing being drawn integral With both of thesides thereof; said perimetric portion of the casing oomprising a recessthrough which the cord eX- tends and a rounded mar inal flange on 'saidrecess; flanges integral With and part of the casing extending from saidcasing at the opposite ends thereof in parallel relation With saidface-plate; means local to said anges connecting said face-plate andcasing in rigid relation; a shaft in said easing; and a pulley mountedto rotate in said casing on said shaft, substantially as set forth.

In testimony whereof I have hereunto signed my name, at Philadelphia,Pennsylvania, this 14th dag.' of July, 1904.

LAWRENCE ZAMBON I.

Witnesses:

JOSEPH ENrWIsLE, CHARLES E. BI'RNLEY.

